Numerical simulation and experiment of integrated oil circulating pump for 300 MW shaft seals type RCP
Feng Xiaodong1, Cai Long1, Wu Dazhuan2, Yang Lifeng1, L? Xiangping1
1.Harbin Electric Power Equipment Co. Ltd., Harbin Electric Corporation, Harbin, Heilongjiang 150066, China; 2.Institute of Process Equipment, Zhejiang University, Hangzhou, Zhejiang 310027, China
Abstract：The structure features of axial-flow helix impeller of an integrated oil circulating pump for 300MW shaft seals type RCP and the pump hydraulic characteristics are studied. The three dimensio-nal flow of oil in the hydraulic components is numerically simulated, and the pump performance is predicted and the rationality of design parameters chosen for the impeller and guide vane is verified. The pump hydraulic performance is measured under different operating conditions and the influence of oil temperature on the performance and its mechanism are analyzed based on the numerical and experimental results. The results show that the numerical results agree well with the experimental data at high flow rates. Even though the pump is subject to an excellent cavitation performance and a high reliability, its efficiency is as low as about 10% only. With the increasing temperature, the lubricant viscosity gets small, accordingly the impeller disk friction loss and the skin friction loss across the impeller and guide vane are decreased; eventually, the pump head and efficiency are improved. The results indicate that the pump hydraulic performance can meet the operational requirement by the thrust bearing lubricant system, and provide an important reference for analysis and design of a lubricant circulating system.
[1]蔡龙,张丽平.浅谈压水堆核电站主泵[J].水泵技术,2007(4): 1-9. Cai Long, Zhang Liping. Disscussion of PWR main pump[J]. Pump Technology, 2007(4): 1-9.(in Chinese)[2]Oh H W, Yoon E S, Park S J. Hydraulic performance analysis of an axial-flow main coolant pump for the system-integrated nuclear reactor [J]. Journal of Power and Energy, 2006, 220(A6):635-640.[3]赵星宇,刘莹,温庆丰,等. 核主泵备用机械密封材料的摩擦性能研究 [J].流体机械,2012,40(5):1-5,20. Zhao Xingyu,Liu Ying,Wen Qingfeng,et al. Study on frictional performance of mechanical seal spare material used for nuclear coolant pump[J]. Fluid Machinery, 2012,40(5):1-5,20.(in Chinese)[4]Gong Hua, Gioia Falcone, Catalin Teodoriu, et al. Comparison of multiphase pumping technologies for subsea and downhole applications [J]. Oil and Gas Facilities, 2012(2): 36-46.[5]Ryazantsev V M. The A5 2VV 320/25 multiphase twin-screw pump [J]. Chemical and Petroleum Engineering, 2003, 39(5/6): 344-347.[6]Rabiger K, Maksoud T M, Ward J, et al. Theoretical and experimental analysis of a multiphase screw pump, handling gas-liquid mixtures with very high gas volume fractions [J]. Experimental Thermal and Fluid Scie-nce, 2008, 32: 1694-1701.[7]Benghanem M, Daffallah K O, Joraid A A, et al, Performances of solar water pumping system using helical pump for a deep well: A case study for Madinah, Saudi Arabia[J]. Energy Conversion and Management, 2013, 65: 50-56.[8]Mohseni M S, Miripour-Fard B, Zajkani A. Experimental study of pumping performance of rotating helical pump as a gas-liquid transporter [J]. Journal of Mechanical Engineering Science, 2010, 224: 2418-2422.[9]李清平,薛敦松,李忠芳,等. 螺旋轴流式多相泵的试验研究与优化设计[J].工程热物理学报,2004, 25(6): 962-964. Li Qingping, Xue Dunsong, Li Zhongfang, et al. Optimize of the helicon-axial multiphase pump prototype and its experimental studies on performances[J]. Journal of Engineering Thermophysics,2004, 25(6): 962-964.(in Chinese)[10]朱荣生,林鹏,龙云,等. 螺旋轴流泵的固液两相流动数值模拟[J]. 排灌机械工程学报,2014,32(1): 6-11. Zhu Rongsheng, Lin Peng, Long Yun, et al. Numerical simulation of solid-liquid two-phase flow in screw axial-flow pump[J]. Journal of Drainage and Irrigation Machinery Engineering, 2014, 32(1): 6-11.(in Chinese)[11]贺博,朱荣生,王秀礼,等. 螺旋轴流泵的设计开发[J],水泵技术,2014(2): 21-25. He Bo, Zhu Rongsheng, Wang Xiuli, et al. Design and development of the screw axial-flow pump[J]. Pump Technology, 2014(2): 21-25.(in Chinese)[12]曹广军,薛敦松,李昂,等. 离心泵输油黏度换算图的数学表达式[J]. 石油机械, 2001, 29(11): 10-13. Cao Guangjun, Xue Dunsong, Li Ang, et al. Mathema-tic expression for viscosity conversion of oil pumped by centrifugal pumps[J]. China Petroleum Machinery, 2001, 29(11): 10-13.(in Chinese)[13]GB 11120—2011 涡轮机油[S]. 北京:中国标准出版社,2012.[14]王福军. 计算流体动力学分析—CFD软件原理与应用[M]. 北京: 清华大学出版社, 2004: 120-141.[15]SL 140—2006 水泵模型及装置模型验收试验规程[S].北京:中国水利水电出版社,2007.[16]GB 3216—2005 回转动力泵 水力性能验收试验1级和2级[S]. 北京:中国标准出版社,2006.[17]龙云,朱荣生,付强,等.核主泵小流量工况下不稳定流动数值模拟[J]. 排灌机械工程学报,2014,32(4):290-295. Long Yun, Zhu Rongsheng, Fu Qiang, et al. Numerical analysis on unstable flow of reactor coolant pump under small flow rate condition[J]. Journal of Drainage and Irrigation Machinery Engineering, 2014, 32(4): 290-295.(in Chinese)
